WO2010119546A1 - Fitting for fixing heat producing parts - Google Patents

Fitting for fixing heat producing parts Download PDF

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Publication number
WO2010119546A1
WO2010119546A1 PCT/JP2009/057681 JP2009057681W WO2010119546A1 WO 2010119546 A1 WO2010119546 A1 WO 2010119546A1 JP 2009057681 W JP2009057681 W JP 2009057681W WO 2010119546 A1 WO2010119546 A1 WO 2010119546A1
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WO
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Prior art keywords
heat
fixing
generating component
fixing bracket
heat generating
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PCT/JP2009/057681
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French (fr)
Japanese (ja)
Inventor
賢治 西尾
崇 安江
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三菱電機株式会社
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Priority to JP2011509145A priority Critical patent/JPWO2010119546A1/en
Priority to PCT/JP2009/057681 priority patent/WO2010119546A1/en
Publication of WO2010119546A1 publication Critical patent/WO2010119546A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
    • H01L23/4006—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs with bolts or screws
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
    • H01L23/4093—Snap-on arrangements, e.g. clips
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Definitions

  • the present invention relates to a fixing bracket for fixing a heat generating component, and more particularly to a fixing bracket for fixing a plurality of heat generating components in a row with a single bracket.
  • a heat generating component for example, there is a power transistor used for a power supply device.
  • a heat generating component is generally fixed to a heat radiating member such as a heat sink by a fixing metal fitting having thermal conductivity.
  • the fixing metal fitting for example, a clip-shaped one made of a leaf spring material having good thermal conductivity and elasticity is known.
  • Such a fixing bracket for a heat generating component is easy to attach and remove because it has a spring property.
  • a fixing bracket for fixing a plurality of heat generating parts arranged in a straight line with a single bracket.
  • Such a fixing bracket has a fixing portion extending along a row of heat generating components, and a plurality of contact pieces projecting in a comb-like shape from the side edges of the fixing portion toward the respective heat generating components. is doing. And this exothermic part presses a heat-emitting component and suppresses dropping.
  • a heat generating component fixing bracket it is possible to fix the heat generating components arranged in a row with a single bracket, thereby reducing the number of components and reducing the cost (for example, Patent Document 1). Japanese Utility Model Publication No. 2-76845
  • the abutting piece has been produced with the same width from the base to the tip connected to the fixed part. For this reason, there is a problem in that the urging force that presses the component may become too large because the width of the portion having the spring property is too wide.
  • the gap between the two adjacent contact pieces is small, the ventilation is not good and the heat dissipation is inferior, and the heat generation parts are arranged at unequal intervals corresponding to the heat dissipation amount, When the increase / decrease is necessary, the gap between the contact pieces is displaced, the urging force for pressing at the optimum position is insufficient, and the heat radiation efficiency may be lowered.
  • the present invention has been made in view of the above, and each of a plurality of heat generating components attached to a substrate at equal intervals or at irregular intervals, each with an appropriate pressing force by one metal fitting.
  • the heat generating parts can be fixed, the number of parts can be reduced, the cost can be reduced, the ventilation is good, and the heat dissipation is excellent without changing the distance between the contact pieces when changing the distance between the heat generating parts.
  • An object of the present invention is to provide a heat generating component fixing bracket.
  • the heat-generating component fixing bracket of the present invention is a fixing bracket that fixes a plurality of heat-generating components arranged in a first direction with a single bracket.
  • a plurality of fixing parts extending along the rows and having heat conductivity, a plurality of comb-shaped protrusions projecting from the side edges of the fixing parts toward the plurality of heat generating parts, each of the heat generating parts being subjected to a predetermined biasing force
  • the contact piece has a pressing piece.
  • the contact piece extends from the side edge of the fixed portion and has elasticity and generates a biasing force.
  • the pressing portion has a width in the first direction larger than the width of the elastic portion in the first direction, and the pressing force necessary for heat radiation is provided even if the heat generating components are arranged at unequal intervals. It is characterized by keeping.
  • the present invention it is possible to fix a plurality of heat generating components attached to a substrate at equal intervals or irregular intervals with a pressing force appropriate for heat dissipation, reducing the number of components and reducing the cost. It is possible to achieve down, further improving the ventilation and improving heat dissipation.
  • FIG. 1 is a perspective view of a power supply device using a heat generating component fixing bracket according to the present invention.
  • FIG. 2 is a perspective view of the heat-generating component fixing bracket.
  • FIG. 1 is a perspective view of a power supply apparatus using a heat-generating component fixing bracket according to the present invention.
  • FIG. 2 is a perspective view of the heat generating component fixing bracket.
  • a long thin plate-like heat sink 5 produced by extrusion molding of aluminum is attached to each corner portion of a rectangular flat printed wiring board 3.
  • a plurality of power transistors (heat generating components) 7 are mounted on the heat sink 5.
  • a plurality of power transistors (hereinafter simply referred to as transistors) 7 are mounted in a straight line along the longitudinal direction of the printed wiring board 3 which is the first direction. In the row of transistors 7, there are portions that are equally spaced and portions that are unevenly spaced depending on the location.
  • a heat generating component fixing bracket (hereinafter simply referred to as a fixing bracket) 20 is provided to fix the plurality of transistors 7 and prevent them from falling off.
  • the fixing bracket 20 is made of a material having thermal conductivity, and a plurality of fixing portions 21 extending along the rows of the transistors 7 and a plurality of comb-like shapes from the side edges of the fixing portions 21 toward the plurality of transistors 7.
  • a protruding contact piece 23 is provided.
  • the fixing bracket 20 is integrally manufactured by punching a sheet metal material having a predetermined thermal conductivity and a predetermined elastic force by a pressing process and further performing a bending process.
  • the contact piece 23 has a predetermined elasticity, and the contact piece 23 presses the transistor 7 in the drop-off suppressing direction so as to generate a predetermined urging force optimum for heat dissipation.
  • the fixing bracket 20 is fastened to the heat sink 5 in a state where the piece 23 is bent.
  • the fixing bracket 20 is fastened to the heat sink 5 by a bolt that penetrates a screw hole 21 a formed in the fixing portion 21.
  • Each contact piece 23 includes an elastic portion 23a extending from a side edge portion of the fixed portion 21, and a pressing portion 23b provided at the tip of the elastic portion 23a to contact the transistor 7 and press it. Yes.
  • the elastic portion 23a has a small width so that the urging force for pressing the transistor 7 is appropriate, and a sufficient gap for ventilation is formed between the adjacent elastic portions 23a.
  • the pressing portion 23b provided at the tip of the elastic portion 23a has a large width so that it can be surely pressed down not only at equally spaced transistors 7 but also at irregularly spaced transistors 7.
  • the width D1 of the pressing portion 23b in the first direction (the direction in which the rows of the transistors 7 extend) is larger than the width D0 of the elastic portion 23a in the first direction.
  • the pressing portion 23 b presses across two adjacent transistors 7 in a portion where the transistors 7 are arranged at unequal intervals.
  • the transistor 7 has a resin sealing portion in which the element is resin-sealed, and a terminal extending from the resin sealing portion.
  • the pressing portion 23 b contacts the back surface of the resin sealing portion of the transistor 7 and presses the transistor 7 against the upper surface of the heat sink 5.
  • the width D1 of the pressing portion 23b in the first direction is larger than the width D0 of the elastic portion 23a in the first direction. Even if it is, it can be surely pressed down without changing the distance, and the heat of the transistor 7 can be transferred to the heat sink 5 well, or the heat can be absorbed and further efficiently radiated. .
  • the width D0 of the elastic portion 23a is smaller than the width D1 of the pressing portion 23b, so that the pressing force does not become excessive as in the conventional one, and can be set to an appropriate pressing force. Further, since a large gap is formed between the two adjacent elastic portions 23a, the air permeability and the heat dissipation can be improved.
  • the plurality of contact pieces 23 and the fixing portion 21 are integrally formed of a sheet metal material having thermal conductivity, the number of heat dissipating parts can be reduced and the cost can be reduced, and the thermal conductivity is good. Therefore, heat dissipation improves.
  • the heat-generating component fixing bracket according to the present invention is useful when used in a device in which a large number of heat-generating parts such as a power supply device are mounted.
  • a plurality of heat-generating components in a row are mounted. It is optimally applied to devices that can reduce the number of parts.

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

A fitting (20) for fixing heat producing parts singly fixes the heat producing parts arranged in a row in a first direction. The fitting (20) has a fixing section (21) extending along a row of heat producing parts and also has contact sections (23) having heat transfer properties, protruding in a sawtooth shape from a side edge of the fixing section toward the heat producing parts, and pressing the individual heat producing parts by a predetermined urging force. The contact sections (23) are each provided with an elastic section (23a) extending from the side edge of the fixing section (21) and generating the urging force, and also with a pressing section (23b) provided to the tip of the elastic section (23a) and making contact with and pressing a heat producing part. The width (D1) of each pressing section (23b) is greater than the width (D0) of the corresponding elastic section (23a).

Description

発熱部品固定金具Heating part fixing bracket
　本発明は、発熱部品を固定する固定金具に関するものであり、特に列を成す複数の発熱部品を１つの金具で固定する固定金具に関するものである。 The present invention relates to a fixing bracket for fixing a heat generating component, and more particularly to a fixing bracket for fixing a plurality of heat generating components in a row with a single bracket.
　発熱部品としては、例えば電源装置などに用いられるパワートランジスタがある。このような発熱部品は、一般にヒートシンクなどの放熱部材に熱伝導性を有する固定金具により固定される。この固定金具に関しては、例えば、熱伝導性が良く且つ弾性を有する板バネ材料で作製されクリップ状を成すものが知られている。このような発熱部品の固定金具においては、バネ性を有するので取り付け取り外しが容易である。 As a heat generating component, for example, there is a power transistor used for a power supply device. Such a heat generating component is generally fixed to a heat radiating member such as a heat sink by a fixing metal fitting having thermal conductivity. With regard to the fixing metal fitting, for example, a clip-shaped one made of a leaf spring material having good thermal conductivity and elasticity is known. Such a fixing bracket for a heat generating component is easy to attach and remove because it has a spring property.
　また、従来、直線状に列を成す複数の発熱部品に対して１つの金具でこれらを固定する固定金具も提案されている。このような固定金具は、発熱部品の列に沿って延材する固定部と、固定部の側縁部からそれぞれの発熱部品に向かって櫛歯状に突設された複数の当接片を有している。そして、この当接片で発熱部品を押圧して脱落を抑制する。このような発熱部品固定金具においては、一列に整列して取り付けられた発熱部品に対して１個の金具で固定することができ、部品点数が減らせるとともにコストダウンを図ることができる（例えば、特許文献１参照）。
実開平２－７６８４５号公報 In addition, conventionally, there has also been proposed a fixing bracket for fixing a plurality of heat generating parts arranged in a straight line with a single bracket. Such a fixing bracket has a fixing portion extending along a row of heat generating components, and a plurality of contact pieces projecting in a comb-like shape from the side edges of the fixing portion toward the respective heat generating components. is doing. And this exothermic part presses a heat-emitting component and suppresses dropping. In such a heat generating component fixing bracket, it is possible to fix the heat generating components arranged in a row with a single bracket, thereby reducing the number of components and reducing the cost (for example, Patent Document 1).
Japanese Utility Model Publication No. 2-76845
　しかしながら、従来の部品固定金具においては、複数の当接片が各々１個の発熱部品を固定するように設計されていた。そのため、例えば基板上に不当間隔に搭載された発熱部品を固定する際には使い勝手が悪かった。 However, in the conventional component fixing bracket, a plurality of contact pieces are each designed to fix one heat generating component. For this reason, for example, when fixing the heat generating components mounted on the substrate at unreasonable intervals, the usability is poor.
　また、当接片は、従来、固定部に接続する基部から先端までが同じ幅に作製されていた。そのため、バネ性を有する部分の幅が広すぎ部品を押圧する付勢力が大きくなりすぎることがあるといった問題があった。また、隣接する２つの当接片の間の隙間が小さく、通風性がよくなく放熱性に劣るという問題や、発熱部品が放熱量に見合った不等間隔で配置されている状態から、間隔の増減が必要な時に、当接片の間隔とずれ、最適位置で押圧する付勢力が不足し、放熱効率が低下する場合もあった。 Also, conventionally, the abutting piece has been produced with the same width from the base to the tip connected to the fixed part. For this reason, there is a problem in that the urging force that presses the component may become too large because the width of the portion having the spring property is too wide. In addition, the gap between the two adjacent contact pieces is small, the ventilation is not good and the heat dissipation is inferior, and the heat generation parts are arranged at unequal intervals corresponding to the heat dissipation amount, When the increase / decrease is necessary, the gap between the contact pieces is displaced, the urging force for pressing at the optimum position is insufficient, and the heat radiation efficiency may be lowered.
　本発明は、上記に鑑みてなされたものであって、複数の発熱部品が基板に等間隔、又は不等間隔に取り付けられたものに対して、１個の金具により、適切な押圧力で各々発熱部品を固定することができ、部品点数が減らせるとともにコストダウンを図ることができ、さらに通風性が良く、発熱部品の間隔変更においても当接片の間隔も変更することなく放熱性に優れた発熱部品固定金具を提供することを目的とする。 The present invention has been made in view of the above, and each of a plurality of heat generating components attached to a substrate at equal intervals or at irregular intervals, each with an appropriate pressing force by one metal fitting. The heat generating parts can be fixed, the number of parts can be reduced, the cost can be reduced, the ventilation is good, and the heat dissipation is excellent without changing the distance between the contact pieces when changing the distance between the heat generating parts. An object of the present invention is to provide a heat generating component fixing bracket.
　上述した課題を解決し、目的を達成するために、本発明の発熱部品固定金具は、第１の方向に列を成す複数の発熱部品を１つの金具で固定する固定金具であり、発熱部品の列に沿って延材する固定部と、熱伝導性を有し、固定部の側縁部から複数の発熱部品に向かって櫛歯状に複数突設され、各々発熱部品を所定の付勢力により押圧する当接片を有し、当接片は、固定部の側縁部から延び弾性を有し付勢力を発生する弾性部と、弾性部の先端に設けられ発熱部品に当接して押圧する押圧部とを備え、押圧部の第１の方向の幅は、弾性部の第１の方向の幅よりも大きくし発熱部品が不等間隔に配置がされていても放熱に必要な押圧力を保つことを特徴とする。 In order to solve the above-described problems and achieve the object, the heat-generating component fixing bracket of the present invention is a fixing bracket that fixes a plurality of heat-generating components arranged in a first direction with a single bracket. A plurality of fixing parts extending along the rows and having heat conductivity, a plurality of comb-shaped protrusions projecting from the side edges of the fixing parts toward the plurality of heat generating parts, each of the heat generating parts being subjected to a predetermined biasing force The contact piece has a pressing piece. The contact piece extends from the side edge of the fixed portion and has elasticity and generates a biasing force. And the pressing portion has a width in the first direction larger than the width of the elastic portion in the first direction, and the pressing force necessary for heat radiation is provided even if the heat generating components are arranged at unequal intervals. It is characterized by keeping.
　本発明によれば、複数の発熱部品が基板に等間隔、又は不等間隔に取り付けられたものに対して、放熱に適切な押圧力でこれを固定することができ、部品点数を減じるともにコストダウンを図ることができ、さらに通風性が良くなり、放熱性に優れるという効果を奏する。 According to the present invention, it is possible to fix a plurality of heat generating components attached to a substrate at equal intervals or irregular intervals with a pressing force appropriate for heat dissipation, reducing the number of components and reducing the cost. It is possible to achieve down, further improving the ventilation and improving heat dissipation.
図１は、本発明にかかる発熱部品固定金具が用いられた電源装置の斜視図である。FIG. 1 is a perspective view of a power supply device using a heat generating component fixing bracket according to the present invention. 図２は、発熱部品固定金具の斜視図である。FIG. 2 is a perspective view of the heat-generating component fixing bracket.
　３　プリント配線基板
　５　ヒートシンク
　７　パワートランジスタ（発熱部品）
　１０　電源装置
　２０　発熱部品固定金具
　２１　固定部
　２１ａ　ネジ穴
　２３　当接片
　２３ａ　弾性部
　２３ｂ　押圧部
　Ｄ０　弾性部の幅
　Ｄ１　押圧部の幅 3 Printed wiring board 5 Heat sink 7 Power transistor (heat generating component)
DESCRIPTION OF SYMBOLS 10 Power supply device 20 Heating | fusing component fixing bracket 21 Fixing part 21a Screw hole 23 Contact piece 23a Elastic part 23b Press part D0 Width of elastic part D1 Width of press part
　以下に、本発明にかかる発熱部品固定金具の実施の形態を図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。 Hereinafter, embodiments of a heat generating component fixing bracket according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.
実施の形態
　図１は、本発明にかかる発熱部品固定金具が用いられた電源装置の斜視図である。図２は、発熱部品固定金具の斜視図である。本実施の形態の電源装置１０においては、矩形平板状のプリント配線基板３の各コーナー部に、アルミニウムの押し出し成形にて作製された長尺の細板状のヒートシンク５が取り付けられている。 Embodiment FIG. 1 is a perspective view of a power supply apparatus using a heat-generating component fixing bracket according to the present invention. FIG. 2 is a perspective view of the heat generating component fixing bracket. In the power supply device 10 of the present embodiment, a long thin plate-like heat sink 5 produced by extrusion molding of aluminum is attached to each corner portion of a rectangular flat printed wiring board 3.
　ヒートシンク５上には、複数のパワートランジスタ（発熱部品）７が搭載されている。複数のパワートランジスタ（以降、単にトランジスタ）７は、第１の方向であるプリント配線基板３の長手方向に沿って直線状に列を成して搭載されている。トランジスタ７の列においては、場所により等間隔にならぶ部分と不等間隔にならぶ部分とがある。そして、撓、複数のトランジスタ７を固定して脱落を防止するために発熱部品固定金具（以降、単に固定金具）２０が設けられている。 A plurality of power transistors (heat generating components) 7 are mounted on the heat sink 5. A plurality of power transistors (hereinafter simply referred to as transistors) 7 are mounted in a straight line along the longitudinal direction of the printed wiring board 3 which is the first direction. In the row of transistors 7, there are portions that are equally spaced and portions that are unevenly spaced depending on the location. In addition, a heat generating component fixing bracket (hereinafter simply referred to as a fixing bracket) 20 is provided to fix the plurality of transistors 7 and prevent them from falling off.
　固定金具２０は、熱伝導性を有する材料で作製され、トランジスタ７の列に沿って延材する固定部２１と、固定部２１の側縁部から複数のトランジスタ７に向かって櫛歯状に複数突設された当接片２３を有している。固定金具２０は、所定の熱伝導性と所定の弾性力を有する板金材料を、プレス加工により打ち抜き、さらに折り曲げ加工をすることにより一体に作製されている。そして、当接片２３が所定の弾性を有するようにされており、この当接片２３がトランジスタ７を脱落抑制方向に押圧する所定の、放熱に最適な付勢力を発生するように、当接片２３を撓らせた状態で固定金具２０がヒートシンク５に締結されている。固定金具２０は、固定部２１に形成されたネジ穴２１ａを貫通するボルトによりヒートシンク５に締結されている。 The fixing bracket 20 is made of a material having thermal conductivity, and a plurality of fixing portions 21 extending along the rows of the transistors 7 and a plurality of comb-like shapes from the side edges of the fixing portions 21 toward the plurality of transistors 7. A protruding contact piece 23 is provided. The fixing bracket 20 is integrally manufactured by punching a sheet metal material having a predetermined thermal conductivity and a predetermined elastic force by a pressing process and further performing a bending process. The contact piece 23 has a predetermined elasticity, and the contact piece 23 presses the transistor 7 in the drop-off suppressing direction so as to generate a predetermined urging force optimum for heat dissipation. The fixing bracket 20 is fastened to the heat sink 5 in a state where the piece 23 is bent. The fixing bracket 20 is fastened to the heat sink 5 by a bolt that penetrates a screw hole 21 a formed in the fixing portion 21.
　各々の当接片２３は、固定部２１の側縁部から延びる弾性部２３ａと、この弾性部２３ａの先端に設けられてトランジスタ７に当接してこれを押圧する押圧部２３ｂとから構成されている。弾性部２３ａは、トランジスタ７を押圧する付勢力が適切となるように、また隣接する弾性部２３ａ間に通風のための隙間が十分に形成されるように、幅が小さくなっている。一方、弾性部２３ａの先端に設けられた押圧部２３ｂは、等間隔のトランジスタ７はもとより、不等間隔のトランジスタ７であっても確実に押さえ込むことが出来るように幅が大きくされている。すなわち、押圧部２３ｂの第１の方向（トランジスタ７の列の延びる方向）の幅Ｄ１は、弾性部２３ａの第１の方向の幅Ｄ０よりも大きくなっている。図１のＡにて示す部分のように、押圧部２３ｂはトランジスタ７が不等間隔に列ぶ部分においては、隣接する２つのトランジスタ７を跨いで押圧する。 Each contact piece 23 includes an elastic portion 23a extending from a side edge portion of the fixed portion 21, and a pressing portion 23b provided at the tip of the elastic portion 23a to contact the transistor 7 and press it. Yes. The elastic portion 23a has a small width so that the urging force for pressing the transistor 7 is appropriate, and a sufficient gap for ventilation is formed between the adjacent elastic portions 23a. On the other hand, the pressing portion 23b provided at the tip of the elastic portion 23a has a large width so that it can be surely pressed down not only at equally spaced transistors 7 but also at irregularly spaced transistors 7. That is, the width D1 of the pressing portion 23b in the first direction (the direction in which the rows of the transistors 7 extend) is larger than the width D0 of the elastic portion 23a in the first direction. Like the portion indicated by A in FIG. 1, the pressing portion 23 b presses across two adjacent transistors 7 in a portion where the transistors 7 are arranged at unequal intervals.
　トランジスタ７は、素子が樹脂封止されてなる樹脂封止部と、この樹脂封止部から延びる端子とを有している。押圧部２３ｂは、トランジスタ７の樹脂封止部の背面に当接してトランジスタ７をヒートシンク５の上面に押圧する。 The transistor 7 has a resin sealing portion in which the element is resin-sealed, and a terminal extending from the resin sealing portion. The pressing portion 23 b contacts the back surface of the resin sealing portion of the transistor 7 and presses the transistor 7 against the upper surface of the heat sink 5.
　このような構成の固定金具２０においては、押圧部２３ｂの第１の方向の幅Ｄ１は、弾性部２３ａの第１の方向の幅Ｄ０よりも大きくなっているので、不等間隔のトランジスタ７であっても、間隔を追従して変えることなく確実に押さえ込むことが出来るとともに、トランジスタ７の熱を良好にヒートシンク５に伝えたり、熱を吸収してさらにこの熱を効率的に放熱することができる。また、逆に弾性部２３ａの幅Ｄ０は、押圧部２３ｂの幅Ｄ１よりも小さくなっているので、従来のもののように押圧力が過大となることがなく適切な押圧力とすることができ、また隣接する２つの弾性部２３ａ間に大きな隙間が形成されるので、通風性が良く放熱性に優れたものとすることができる。 In the fixture 20 having such a configuration, the width D1 of the pressing portion 23b in the first direction is larger than the width D0 of the elastic portion 23a in the first direction. Even if it is, it can be surely pressed down without changing the distance, and the heat of the transistor 7 can be transferred to the heat sink 5 well, or the heat can be absorbed and further efficiently radiated. . Conversely, the width D0 of the elastic portion 23a is smaller than the width D1 of the pressing portion 23b, so that the pressing force does not become excessive as in the conventional one, and can be set to an appropriate pressing force. Further, since a large gap is formed between the two adjacent elastic portions 23a, the air permeability and the heat dissipation can be improved.
　なお、複数の当接片２３と固定部２１とは熱伝導性を有する板金材料により一体に成形されているので、放熱部品点数が減らせるとともにコストダウンを図ることができ、熱伝導性が良いので放熱性が向上する。 Since the plurality of contact pieces 23 and the fixing portion 21 are integrally formed of a sheet metal material having thermal conductivity, the number of heat dissipating parts can be reduced and the cost can be reduced, and the thermal conductivity is good. Therefore, heat dissipation improves.
　以上のように、本発明にかかる発熱部品固定金具は、電源装置などのような発熱部を数多く搭載する装置に用いられて有用なものであり、特に、列を成す複数の発熱部品を搭載し部品点数の削減が臨まれる装置に適用されて最適なものである。 As described above, the heat-generating component fixing bracket according to the present invention is useful when used in a device in which a large number of heat-generating parts such as a power supply device are mounted. In particular, a plurality of heat-generating components in a row are mounted. It is optimally applied to devices that can reduce the number of parts.

Claims (4)

  1. 　第１の方向に列を成す複数の発熱部品を１つの金具で固定する固定金具であり、
    　前記発熱部品の列に沿って延材する固定部と、
    　熱伝導性を有し、前記固定部の側縁部から前記複数の発熱部品に向かって櫛歯状に複数突設され、各々前記発熱部品を所定の付勢力により押圧する当接片を有し、
    　前記当接片は、
    　前記固定部の側縁部から延び弾性を有し前記付勢力を発生する弾性部と、
    　前記弾性部の先端に設けられ前記発熱部品に当接して押圧する押圧部とを備え、
    　前記押圧部の前記第１の方向の幅は、前記弾性部の前記第１の方向の幅よりも大きい
    　ことを特徴とする発熱部品固定金具。     A fixing bracket for fixing a plurality of heat-generating components in a row in a first direction with a single bracket;
    A fixing portion extending along the row of the heat generating components;
    A plurality of comb-like protrusions projecting from the side edge of the fixed portion toward the plurality of heat generating components, each having a contact piece that presses the heat generating component with a predetermined biasing force ,
    The contact piece is
    An elastic portion extending from a side edge of the fixed portion and having elasticity to generate the biasing force;
    A pressing portion that is provided at a tip of the elastic portion and presses against the heat-generating component;
    The heat-generating component fixing bracket, wherein a width of the pressing portion in the first direction is larger than a width of the elastic portion in the first direction.
  2. 　前記当接片と前記固定部とは熱伝導性を有する板金材料により一体に成形されている
    　ことを特徴とする請求項１に記載の発熱部品固定金具。     The heat-generating component fixing bracket according to claim 1, wherein the contact piece and the fixing portion are integrally formed of a sheet metal material having thermal conductivity.
  3. 　前記複数の発熱部品は、ヒートシンク上に列を成して搭載され、前記固定部は、前記ヒートシンクに固定されている
    　ことを特徴とする請求項１または２に記載の発熱部品固定金具。     The heat generating component fixing bracket according to claim 1 or 2, wherein the plurality of heat generating components are mounted in a row on a heat sink, and the fixing portion is fixed to the heat sink.
  4. 　前記発熱部品は、素子が樹脂封止されてなる樹脂封止部と、該樹脂封止部から延びる端子とを有し、
    　前記押圧部は、前記発熱部品の前記樹脂封止部に当接してこれを押圧する
    　ことを特徴とする請求項１または２に記載の発熱部品固定金具。     The heat-generating component has a resin sealing portion in which an element is resin-sealed, and a terminal extending from the resin sealing portion,
    The heat generating component fixing bracket according to claim 1 or 2, wherein the pressing portion contacts and presses the resin sealing portion of the heat generating component.
PCT/JP2009/057681 2009-04-16 2009-04-16 Fitting for fixing heat producing parts WO2010119546A1 (en)

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JP2013074138A (en) * 2011-09-28 2013-04-22 Keihin Corp Semiconductor control device
JP2014016026A (en) * 2012-06-13 2014-01-30 Toyota Industries Corp Plate spring and heat dissipation device
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JP2015118985A (en) * 2013-12-17 2015-06-25 Tdk株式会社 Fixing bracket
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